Number of nX4 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.
A166806
Number of nX4 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.
Terms
- a(0) =3a(1) =69a(2) =443a(3) =1871a(4) =6301a(5) =18295a(6) =47655a(7) =113995a(8) =254280a(9) =534707
External references
- oeis: A166806